alkenes. The overall process is initiated by the selective addition of a CF3 radical to the alkene to provide a nucleophilic alkyl radical intermediate, which enables an intramolecular endo addition exclusively to the ortho-position of the pyridinium salt. Both secondary and tertiary alkyl radicals are well-suited for addition to the C2-position of pyridinium salts to ultimately provide synthetically
对于未活化的烯烃的位点选择性三
氟甲基化
吡啶基化,已经实现了在
吡啶基环上的光催化邻位选择性迁移。整个过程是通过将
CF3自由基选择性地添加到烯烃中以提供亲核烷基自由基中间体而启动的,该中间体能够将分子内的内含物专门添加到
吡啶鎓盐的邻位。仲烷基和叔烷基都非常适合于添加
吡啶鎓盐的C 2-位,以最终提供具有合成价值的C 2-氟烷基官能化的
吡啶。此外,该方法已成功应用于以P为中心的自由基的反应。复杂
生物活性分子的后期功能化进一步证明了这种转化的效用。